Suspected kidnapper Ann Pettway turned herself in to the FBI in Stratford, Conn. She is alleged to have kidnapped a baby from Harlem Hospital 23 years ago and raised the child as her own.AP

Reunited — Carlina White, center, back with her parents Carl Tyson and Joy White after 23 years. (Tamara Beckwith)

Fake mom Ann Pettway couldn’t take the heat.

Sources tell The Post that Pettway, wanted in the kidnapping of Carlina White from Harlem Hospital 23 years ago, turned herself in to the FBI in Connecticut today.

“The FBI notified us that shortly after 1:30 p.m. Ann Pettway turned herself in in Stratford, and she’s now in the custody of the FBI. It is our understanding she was alone when she turned herself in,” said Bridgeport Detective Keith Bryant.

The development came as a police manhunt was closing in on Pettway, who has been on the lam since dropping out of sight last week, after her alleged kidnapping of White came to light.

Pettway was spotted at a Bridgeport pawn shop Saturday and narrowly escaped after a clerk called the cops. She’s from Bridgeport, where she still has dozens of relatives. She called cops to arrange turning herself in from a relative’s house in nearby Stratford, Conn.

On Thursday, an arrest warrant was issued for Pettway in North Carolina, where she is considered to be “absconding supervision” on her parole in an embezzlement case.

The FBI in New York and the NYPD both want to question her in the abduction of then-19-day-old Carlina — renamed Nejdra Nance and raised by Pettway in Bridgeport.

The pawn-shop sighting set off a frenzied hunt for Pettway at two Bridgeport addresses, including that of her 75-year-old mother, Mary Pettway, and the home of the biological father of Pettway’s 13-year-old son, Trevon, who also has not been seen since last week.

It is believed Pettway abruptly left her Raleigh, NC, home when the amazing story of Carlina’s reunion with her real family was revealed by The Post on Wednesday.

Carlina, now 23, tracked down birth parents Joy White and Carl Tyson and verified through DNA testing that they were the couple who last saw their infant girl when they dropped her off at Harlem Hospital for treatment of a fever.

White’s biological father, Carl Tyson, told People the arrest of Pettway is “really emotional for me.”

“I would just love to speak to her, to see her and talk to her and ask her, ‘Why?’ That’s all I want,” he says. “Whatever the state or the feds, however they prosecute her, that’s up to them. I would just like to ask her, ‘Why?'”